LanMark's Discussions

Not sure how to search on this or if this has been discussed before.So I finally put together my quad with the APM2.5+ and have flown it a few times and while I am flying it there is this random…Continue

LanMark's Page

Latest Activity

"Another problem.. The power from a panel is highly variable. If someone walks by and shades your panel or even a cloud, your panel voltage will drop to nearly zero which likely will not make the lipo charger happy."

"I don't think that charging a lipo from a 5W panel will work very well. First off the 5W is really the theoretical max. In full sun of the summer you likely won't get even 80% of that. I have a 100W panel for other reasons outside of…"

"PixHawk should absolutely have a max altitude setting set to 400'.. Much like how other equipment you buy come with default settings. let the user turn it off and be warned of the consequences.. Otherwise our industry is doomed if someone ever…"

"Hugues, although the Spade kits are not directly available on the RitewingRC website yet, if you call them (602 739 4524) they may be able to cut you a kit, or work with you on building a Spade to the point where you need it to be. I have found them…"

"Gerard, we have tested the blue band too as a substitute for the red band because that is what MaxMax was selling, but our findings are the red band usually well out performs the blue band. There are a couple of possible reasons for this…"

"The power of NDVI is not in looking at a single date in time, but looking at the multitemporal component. NDVI, in essences is a spectral merging method that brings together the visible component that is used by the plant for photosynthesis, and the…"

"Mark: completely right. I'm certainly not advocating that this technology would replace any of the work. I see this technology as an additional input into planning crop scouting to improve the efficiency.
Indeed, waiting for leaves to yellow is…"

"Hi Gerard! Good point! If pests are hidden in stems and bore holes there will be no chance. But if there are leaf color changes this should be possible to detect. NDVI is most probably not the best idea. But specific multi-band…"

"I was thinking all black, with a low lux camera, and some nav lights and bright forward facing lights.. sort of like my profile picture .. which is a TBS discovery frame that unfortunately crashed into a tree...oops."

"I have a background in programming PLC's, which is a world different than c+, but I have been learning more and more tricks every day. So the programming does not really bother me. I understand PID loops but it is defiantly a leaning curve when…"

"I have been very happy with my NAZA and WooKong-M.. excellent out of the box.. no endless tuning and tweaking and all of that. If you want to do FPV I would recommend buying the newer NAZA as you can get the mini iOSD which gives you that head…"

"@Erik - Naza is a nice controller, no worries about vibration with it just use double sided tape to mount. But, relatively expensive and unless you add some extras, more expense, not as powerful as APM"

"Sorry to hear about the crash! I dropped my TBS last night from about 20 feet after switching out of GPS mode. Lucky I only broke one of the arms and I had a few spares laying around.. I am curious about the Naza. I actually have a chance to buy one…"

LanMark's Photos

Comment Wall (2 comments)

Sorry for the slow responce, your choice of frame is great I have been flying mine for about 1.5 years and have had no complaints. It is well desigened and has allot of room to do whatever you want. I like the cover it looks good and is great for protection of the electronics. I do have other pics if you want to see how I mounted stuff.

NDVI (and derivatives) can be a very useful tool in precision ag. I currently use an index based on the visible spectrum that works well with my precision ag consulting. But using the visible spectrum has its limitations (able to identify shifts in productivity, but unable to quantify the level of productivity). Basically, I'm able to define management zones, but unable to say whether they are high-yielding or not. NDVI is the next step, especially with variable rate populations, nitrogen, and weed-control.

My goal is in line with your train-on-thought...use affordable UAVs to capture high quality imagery that typically is either cost-prohibitive or poor resolution.

P.S. My background is in Agronomy (crops and soils) with very little experience with software, electronics, etc....well actually enough experience to get me in trouble.